Study on spin configuration in photoresponsive iron mixed-valence complexes by Mössbauer spectroscopy

@article{Okazawa2014StudyOS,
  title={Study on spin configuration in photoresponsive iron mixed-valence complexes by M{\"o}ssbauer spectroscopy},
  author={Atsushi Okazawa and J. Yoshida and Noriaki Kida and Izuru Kashima and Wataru Murata and Masato Enomoto and Norimichi Kojima},
  journal={Hyperfine Interactions},
  year={2014},
  volume={226},
  pages={351-357}
}
We have investigated magnetic properties in a series of photoresponsive dithiooxalato (dto)-bridged iron mixed-valence complexes, (SP-R)[FeIIFeIII(dto)3] (SP-R = R-substituted pyridospiropyran cation; R = Me, Et, and Pr; abbreviated as 1Me, 1Et, and 1Pr, respectively). As for our previous reports, 1Me and 1Et show two-step succeeding ferromagnetic transitions at TC = 25 & 8 K and 22 & 5 K, respectively. However, 1Et has no hysteresis in the magnetic susceptibility, while 1Me undergoes the… CONTINUE READING

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